To provide a drying device for a recording medium and an ink jet recording device in which the recording medium having an image formed by ink can be dried efficiently while preventing occurrence of dew formation and an image recording speed can be improved.

A recording medium having an image formed with ink is loaded into a drying chamber within a drying device D from the direction of an arrow A. The recording medium is heated by a heating plate 15 surface contacting the recording medium, water vapour generated by heating action is changed into water droplets, the water droplets are received in a pan 23, thereafter the water is recovered into a waste liquid tank 25 through a waste liquid pipe 24.